Re: [GIT PULL] Scheduler changes for v6.8

[Linus Torvalds]

On Wed, 10 Jan 2024 at 14:19, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> Just a note that I'm currently bisecting into this merge for a
> horrendous performance regression.
>
> It makes my empty kernel build go from 22 seconds to 44 seconds, and
> makes a full kernel build enormously slower too.
>
> I haven't finished the bisection, but it's now inside *just* this
> pull, so I can already tell that I'm going to revert something in
> here, because this has been making my merge window miserable.

It's one of these two:

  f12560779f9d sched/cpufreq: Rework iowait boost
  9c0b4bb7f630 sched/cpufreq: Rework schedutil governor performance estimation

one more boot to go, then I'll try to revert whichever causes my
machine to perform horribly much worse.

             Linus